Improvement in fasteners for the meeting-rails of sashes



2 Sheets-Sheet 1v.

B. L'ANDBR.

Fenstenwr for the Meeting-Rails of Sashes.

Nep. 206,583, Patented July 3o, 1318.

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B. LANDBR.-

2 Sheets-Sheet: 2.

Fastener for the .Meeting-Rails of Sashes. No. 206583.

Patented my 3o, 187s.

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/Mm' yb UNITED STATES PATENT EEIEa BENJAMIN LANDER, OF IBROOlx'LYN, NElVYORK.

IMPROVEMENT lN FASTENEHS FOR THE MEETING-RAILS 0F SASHES.

Specification forming part of Letters Patent N0. 206,583,1lu1ed Jul)y3l?, lr'zT-E; application filed November 9, 1877.

To all whom it may concern:

Be it known that I, BENJAMIN LANDEE, of the city of Brooklyn and Stateof New York, have invented a :new and useful Improvement in AutomaticSash-Locks, of which the following is a full, true, and exactdescription, reference being had to the accompanying drawings. Thepurpose of my invention is to forni a sashlock which will automaticallylock together the two sashes ot' a window-frame when both are closed,which locking-cam is attached to one of the window-sashes, while acontrivance is attached to the other which will unlock and free thelocking-cam attached to the other sash, and allow the window to beopened. By means of this contrivanee, the difficult-y commonlyexperienced in operating these locking-cams is avoided, lfor, whereasheretofore there has usually been a liability of pinching or injuringthe tingers in throwing back the locking-cam at the time the window israised, by means of this contrivance the hand does not come in contactwith the locking-cam at all, but operates a tripping device attached tothe moving sash; and my apparatus is constructed to be operated bygravity alone, without the necessity of any spring. This cam can bethrown back in various ways, as will be hereinafter shown.

In my drawing similar letters refer to similar parts in all the iigures.

Figure l represents the sashes closed; Fig.

2, partially open; Fig. 3, still farther open,V

showing the window-bars more plainly 5 and Fig. 4, a general View, withthe thumb-piece and tripping device connected together and forming onepiece.

A and B represent the front or lower and rear or upper sash, sliding inthe ordinary window-frame, and separa-ted by the strip K in the usualway. G represents the glass set in the window-bars, which are verticallyrepresented by @o and r, horizontally' by It. It is customary withwindows that the glass be placed nearer the back than the front of theframe, and that the part of the bar yw inside of the glass be broaderthan the part i: outside of the glass, so that while the front edge ofthe bar or molding is flush with the edge of the window-frame, as isclearly shown in Fig. 3, the rear does not extend to the outside edge ofthe window-frame, but is recessed, as it were, so that there is acertain amount of free space between the edge of the window-frame andthe back edge of the window-bars, which I have represented by the letterm. It is plain that no locking contrivance attached to the front sashcan project beyond the line n without coming in contact with thecross-bars of the upper sash; therefore any automatic device attached tothe lower sash would necessarily strike against and injure the frame ofthe npper sash. I have therefore attached my automatic sash-lock to theupper or rear instead of the lower or forward one, whereby I obtain aspace in which it can swing clear of the crossbars of the lower sash,and thus avoiding the difiiculty just mentioned.

C represents the swinging cam, pivoted at c, and so constructed thatgravity tends to throw it forward into the position shown in Figs. 1 and3, while it can be thrown back into the position shown in Fig. 2 by someunlocking contri vance. This lockin g-cam is situated within theprotecting and inclosing case F. Attached to the front sash is thestationary piece O, with which the locking-cam G engages. Both areprovided with correspondingnotches and teeth p, whereby a more certaincontact is obtained. Attached to the lower sash is a tripping device,which preferably consists of two pieces, H and I), pivoted at h and d.

The vibrating piece H is provided with a tooth or arm, r, which bearsagainst the locking-cam U. It is obvious that if the vibratin piece H bethrown up, as shown by the dotted lines in Fig. 1, its action on thelocking-cam will force the cani into the position shown in dotted linesin Fig. l or in Fig. 2. This vibrating piece II can be raised by thetrigger D, pivoted at d, and provided with a thumbpiece, t. 1f thethumb-piece be depressed, the frame will likewisebc depressed, and thecam C will be thrown back into the position shown in Fig. 2. By placingthe hand beneath the upper bar otl the frame A, with the thumb againstthe thumb-piece t, said thumb-piece is readily thrown into thefpositionshown in Fig. l by dotted lines, whe'n the lower sash can be raised,since the cani will be in the position shown in Fig. i. After the frameof the lower sash has passed clear ot' the cam C it will swing forwardinto the position shown in Fig.

3; but, owing to the existence of the recess m, it will not collie incontact with the crossbar t of the window-frame.

The locking-cam is provided with the tooth or lug .1", which comes incontact with the lower part of the frame or .case F, which prevents itsfarther forward movement; but this is obviously unnecessary it' the cambe properly balanced.

After the window-frames A and l have passed each other and the window isclosed, gravity will tend to throw the cam forward into the positionshown in Fig. l, after it has been forced back by the edge of thewindowframe into the position shown in Fig. 2. The stationary piece Omight be provided with a guard extending down on the beveled surfaceofthe lower sash, on which the forward point ofthe cam could slide.

In case the window was not entirely closed, a tooth, p, of the cam wouldstill engage with some ofthe teeth ofthe stationary' piece (l. It isplain that the tlnnnb-pieee t might be attached directly to thevibrating` piece Il, as shown. The upward lnovement ot' the thumb-piecewould then have the ett'ect ot' first unlocking, then raising the sashA.

The principle of my invention is the use ot' an automatic cam operatedby gravity, which locks the two window-frames tirmly together on theclosure ofthe sash, which cam is pret'- erably attached to the uppersash, and which cam can be unlocked by a tripping device attached to theother sash, whereby it can bc thrown clear of the rising lower sash.

The advantages of this arrangement are very obvious, for the sashescannot, if once closed, be left unlocked, as is now the case. Theapparatus is simple, inexpensive, reliable, and durable, andaccomplishes the whole result without an unnecessary movement, which isnot the case with any other apparatus with which I am acquainted. Thecam C might be notched at lr, for the purpose of preventing the throwingdown of the cam C, by means otl a bent wire acting against the uppersurface ot' the cam (l, and inserted from the outside, since such wireor knife would catch in one ot the notches, and bear against the sideot' the case E surrounding` and supporting the vibratin g piece ll.

It is plain that the cam could be constructed in various ways, providedits center of gravity was so arranged as to throw it forward on a pivot.It might have only one healing-point against the stationary piece O.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. The combination ot'the swinging cam having one or more teeth orpoints, p, attached to one sash ot' the window, with the iixed surfacehaving corresponding teeth or corrugations, and attached to the othersash ol' the window, substantially as described.

L. The combination ot' a swinging locking caln attached to one sash of awindow and a vibrating piece attached to the other sash ot'

